Bolt & Nut CUP Head / GALVANISED
Cup Head Bolt & Nut Galvanised are heavy-duty fastener sets designed for external timber and structural connections. The smooth, rounded cup head sits flush against the timber surface, providing a neat, snag-free finish ideal for decking, pergolas, fencing and general outdoor construction.
Overview
- Cup head (carriage bolt) and nut set
- Galvanised finish for corrosion resistance in external applications
- Square section under the head prevents bolt rotation during tightening
- Available in M8, M10, M12 and M16 diameters
- Multiple length options to suit different timber thicknesses
- Sold in packs — not as individual pieces
Key Features & Benefits
- Dome-shaped cup head provides a smooth, rounded surface — reduces snag and injury risk
- Square neck under head self-locks into timber, eliminating the need for a second spanner
- Hot-dip galvanised coating delivers reliable corrosion resistance for outdoor use
- Consistent thread pitches ensure correct nut engagement across all sizes
- Strong bolt and nut combination suitable for structural timber-to-timber connections
- Wide range of diameters and lengths covers most residential and light commercial requirements
Applications
- Deck frame and decking board connections
- Pergola and verandah timber structures
- Fence rail and post fixing
- Gate hardware and garden structures
- Landscaping retaining walls and sleeper connections
- General external timber-to-timber fastening
